2022 Early Hearing Detection & Intervention Virtual Conference

March 13 - 15, 2022

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9/28/2018  |   4:15 PM - 4:30 PM   |  Greater Prairie Chicken (Tympanuchus cupido pinnatus) Production in Nebraska and Northwestern Minnesota, 2012-2016.   |  Eccles Conference Center Auditorium

Greater Prairie Chicken (Tympanuchus cupido pinnatus) Production in Nebraska and Northwestern Minnesota, 2012-2016.

In 2012, the Society of Tympanuchus Cupido Pinnatus, LTD initiated a five-year research project in the Nebraska sandhills (121,400 square kilometers) to answer questions about the year-round ecology of a large greater prairie chicken population. After five breeding seasons, results indicate that production of radio-marked greater prairie chicken hens in Nebraska was over twice that of hens in the much smaller (3,430 square kilometers) Minnesota population (97 chicks/100 hens versus 42 chicks/100 hens). Nest success was lower in Nebraska than Minnesota (40.3%, n=253 versus 57.1%, n=191) but the percent of hens that fledged chicks in Nebraska was higher than Minnesota (51.0% versus 29.6%) and Nebraska radio-marked hens fledged more chicks/hen than Minnesota hens (4.7, n=71 versus 2.5, n=57). Long-term data from North Dakota, Minnesota, Wisconsin and Nebraska suggest that there has been a significant decline in the number of chicks/hen in prairie grouse with a reduction of 2.5 young/hen in both large and small populations. The reasons for these declines are not known but declines appear to be greater in a fragmented agricultural/grassland landscape than contiguous grassland habitat suggesting agricultural chemicals and/or a decline in insect numbers associated with agricultural pesticides.

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Presenters/Authors

John Toepfer (), Sutton Avian Research Center, jetoepfer@gmail.com;


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